Concentrating-table.



N0. 66|,886. Patented Nov. l3, I900. I. F. MDNELL.

CONGENTHATING TABLE.

(Application filed June 9, 1899.)

(No Model.)

2 Sheets-Sheet W/TNESSES IN VENTOH JJW m: NORRIS ravens cov PHOYO-LITHQ, wnsumc'rom o. c

N0. 66l,886. Patented Nov. l3, I900?" I. F. MDNELL.

CONGENTRATING TABLE.

(Appl t n fild-Tun 9 1899) 2 Sheets-Sheet 2.

(No Mgdel.)

YERs co. moraurua. WASHINGTON. n. c

UNITED STATES PATENT OFFICE.

IRA FERRIS MONELL, OF BOULDER, COLORADO.

CONCENTRATlN G-TABLE.

srmmmxrmn forming part of Letters Patent No. 661,886, dated November 13', 1900. Application filed June 9, 1899. Serial No. 719,913. (No mode...

ore-concentratorsg and the object is to provide a concentrator having a large surface area over which the crushed or pulverized material may pass and by one operation effectually separate the mineral from the sand or pulp.

I will describe a concentrating-table em bodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a front elevation of a concentrator embodying my invention. Fig. 2 is a plan View thereof. Fig. 3 is a section on the line 3 3 of Fig. 2 on an enlargedscale; and Fig. 4 is a section on the line 4 4 of Fig. 2 and also on an enlarged scale.

Referring to the drawings, 1 designates the concentrating-table, mounted to swing in a frame 2. It is designed that the table shall have a lateral movement imparted to it either by direct application of power or by means of concussion. I have here shown the table as suspended from the upper cross-bars of the frame by means of rods or hangers 3, and these rods are of such a length with relation to each other that the table has a downward inclination from its feeding side to its outlet side.

At one side of the table is a driving-shaft 4, on which an eccentric 5 is mounted, and from an eccentric-strap 6 on the eccentric 5 an eccentric-rod 7 extends to a pivotal connection with a bolt 8, movable through an opening in a bar 9, which extends over the top of the table from its rear to its front side. Surroundingthe bolt 8 and abutting at one end against the bar 9 is a buffer-sleeve 10, of rubber or similar material, and against which a tappet 11 on the bolt 8 is designed to engage as the table is moved in one direction by the eccentric. This tappet 11 is made in the form of a nut adjustable on a threaded portion of the bolt 8, so that the degree of throw of the table may be regulated. The table is moved in the opposite direction by means of a rod .12, connected at one end to a fixed portion 13 of the frame and having its other end extended loosely through an opening in a spring-plate 14:, depending from an upper cross-bar of the frame. The rod 12 also passes through a buffer-sleeve 15, of rubber or similar material, which abuts against the outer side of the spring-platel t, and a nut 16 on the threaded end of the rod 12 is designed to engage with the spring-plate during a movement of the table. By adjusting the nut 16 the throw of the table in this direction may be regulated.

It is to be understood that I do not confine my invention to the particular means above described for imparting movements to the table.

Arranged above the head of the table and near one side thereof is a feed-trough 17, which is V-shaped in cross-section and has perforations through its bottom portion, and the pulp or the material to be operated upon is fed to the trough 17 through a pipe 18.

Also arranged along the head of the table and extended from a point near one end of the trough 17 to the opposite side of the table is a perforated water-supply pipe 19.

The table is guided in its back-and-forth movement by guide-bars 20, extended from the ends of the table and movable against the sides of buffer-heads 21, and to relieve the table from too great a shock cushions 22 are provided to engage against the buffer-heads.

Thetable is practically divided into two sections, which may be designated as no and y. .At the junction of the section 00 with the section y and extended diagonally from the feed end to the outlet end of the table is a tail-strip. 23, and extended from this tail-strip 23 parallel with the front and rear of the table is a series of riffles 24C. VVhile these riffles extend parallel with the front and rear of the table, they are shown as arranged diagonally from one side of the table to the other side. The object of the riffles 24 is to form sand cushions through which the mineral will settle and to allow the excess of water to pass out between the riflies to the back end over the tailpiece 23. This water' carries the slime and can be partly concentrated in the sectiony of the table, as will be hereinafter described.

Forward of the riffles 24 and extended in the same direction thereof is a series of shallow or fine grooves 25. These shallow grooves are formed in sets, and at the end of each set is a cleaning-space 3 0. The motion of the table will settle the fine material into the grooves 25 and move it forward'to the cleaning-spaces 30, when it will move diagonally across the said cleaning-spaces into larger By loosening the nut 31 the riffle carried.

thereby may be swung to any desired angle on the table. From the riffles 28 the-clean material will be carried to channels or grooves 32,

formed in the table, and discharged through valve-con trolled pipes 33, with which the ends of the channels or grooves 32 communicate. The material will discharge into a suitable receptacle arranged under the table. Ordinarily the adjustable rifiles will not have to be used for the first four or five sections ofgrooves 25, and for some ore it is not necessary to use them at all. a

At the upper side of each large groove or channel 26 is a row of upwardly-extended pins 3e. These pins are designed to split the sand cushion and give the mineral mixed with the sand a chance to settle in the small grooves or channels. The several grooves or channels 25 and a part of each groove or channel 26 are formed in a plate 35, removably seated in a recess formed in the table 1. This plate may consist of any suitable materialsuch as wood, metal, asphalt, or the likeand hasits top flush or even with the top surface of the table. The object in making this plate removable is so that another plate may be-substituted, having channels or grooves of dilferent depths depending upon the material to be concentrated.

' The outlet edge of the table 1 has a greater incline than has the main portion of the table, as indicated at 36. This gives more flow to the sand as it leaves the riffles 24 and a more rapid discharge. On the edge of this portion 36 is a riffle 37, designed to catch any material that the operator may think worth saving. At one end this riffle is provided with a vertically-adj ustable portion 38,whic-h may be raised or lowered, as desired, by means of a liner or a shim placed underneath said portion 38.

era es On the section y of the table is ,a removable plate 39. similar to the plate 35, and in' this plate 39 is formed a series of grooves or channels 40, and also below each set of grooves or channels 40 is a deeper groove 41, which communicates with a discharge-opening 4.2,which connects with a valve-controlled pipe for dis charging material into a tank or other receiv ingvessel underneath the table. Extended outward on the table from the tailpiece 23 and above each opening or outlet 42 is a guard-strip 4L3. These guard-strips are de= signed to prevent sand from passing into the outlets. Upon one side of the plate 39 and arranged on the table-section 'y is a series of riflles 44:, which form the sand cushions and through which the excess of water passes. These riifies 44 abut against a tailpiece 45, which extends diagonally on the table.

In the operation of the machine the tendency of movement of the heavier particles will be toward the side Z of the table. The Very light material, with the water, however, will pass over the tailpiece 23 and into the fine channels or grooves on the section 'y of the table, and from these fine grooves the material will be deposited into the larger or deeper grooves 41. Some of the material and sand, however, will pass to the upper sides of the riffies 44: and form sand cushions through which the excess of water will pass and discharge over the tailpiece 45.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In an ore-concentrator, a table having a series of channels in its top, the said channels having valve-controlled outlets through the table, and an adjustable riffle at one end of each of said channels, substantially as specifled.-

2. A concentrator, having a series of shallow channels and deeper channels, the series of channels being arranged diagonally on the table and the deeper channels having communication' with valve-controlled outlets, a series of riffles at one side of the series of channels, the said ritfles also being arranged diagonally, and means for imparting swinging motion to the table, substantiallyas specified.

3. A concentrator-table, having a diagonally-disposed recess formed in it, a plate adapted to be removably seated in said recess, the said plate having a series of channels formed in it, certain .of said channels having communication with discharge-pipes, a series of riffles arranged at one side of the recess, a tailpiece against which the ends or said rifiles abut, and means for imparting motion to the table, substantially as specified.

4:. Aswinging concentrating-table arranged on an incline, a series of riffles on the table, the riffies being arranged diagonally, a tailpiece aga-inst which the riffles abut, and the table having a series of channels formed in it at each side of the riflies, the series of channels being arranged diagonally and certain of the channels being deeper than the other channels and communicating With outlets, and another series of riflies arranged on the table at one side of the first-named series of riffles, substantially as specified.

5. A concentrating-table mounted to swing and arranged in an inclined position, the said table having a series of channels formed in it, the said series of channels being arranged diagonally, and certain of the channels being deeper than the others and having com Ill unication with outlets, a series of fixed riflies at one side of the series of channels and also arranged diagonally, and a series of adjustable riifies arranged diagonally at the opposite side of the series of channels, substantially as specified.

6. A concentrating-table mounted to have a lateral motion and having a series of channels formed in it, the said series of channels being arranged diagonally and in sets, pins extended upward from the table above each set of channels, and fixed riffles arranged at one side of the series of channels, substantially as specified.

7. A concentrating-table, a number of series of riflies on the table, each series being arranged in a diagonal direction, each riffle in a series being parallel with the front and rear of the table, and a tailpiece extended diagonally on the table adjacent to an end of each series of riffies, substantially as speci fied.

8. A concentrating-table having a recess arranged diagonally in its top, a channeled plate adapted to be placed in said recess, the channels of the plate being arranged in sets each set consisting of a number of channels having a cleaning-space at one end, and a larger channel which extends beyond the ends of the other channels of a set, substantially as specified.

IRA FERRIS MONELL.

Witnesses:

FREDERICK W, KOHLER, Jr., FREDERICK L. WILLIAMSON. 

